This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 73 |
5 | 501 |
6 | 4050 |
7 | 37632 |
8 | 394296 |
9 | 4595976 |
10 | 58932720 |
11 | 823949280 |
12 | 12467513520 |
13 | 202933851120 |
14 | 3534322952160 |
15 | 65559527953920 |
16 | 1290129736896000 |
17 | 26840074522060800 |
18 | 588476031700677120 |
19 | 13560642403296468480 |
20 | 327603687047488051200 |
21 | 8278733693718654566400 |